Heretical (αιρετικον). Old adjective from αιρεσις (αιρεομα, to choose), a choosing of a party (sect, Acts 5:17) or of teaching (2. Peter 2:1). Possibly a schism had been started here in Crete.

Refuse (παραιτου). Present middle imperative of παραιτεω, to ask from, to beg off from. See same form in 1. Timothy 4:7; 1. Timothy 5:11. Possibly an allusion here to Christ's directions in Matthew 18:15-17.